decussation of medial lemniscus

(redirected from sensory decussation of medulla oblongata)

de·cus·sa·tion of me·di·al lem·nis·cus

the intercrossing of fibers of left and right gracile and cuneate nuclei, immediately rostral to the level of the decussation of the pyramidal tracts in the medulla oblongata. After having crossed, these fibers coalesce to form the medial lemniscus.

de·cus·sa·tion of me·di·al lem·nis·cus

(dē-kŭs-ā'shŭn mē'dē-ăl lem-nis'kŭs)

The intercrossing of the fibers of the left and right medial lemniscus ascending from the gracile and cuneate nuclei, immediately rostral to the level of the decussation of the pyramidal tracts in the medulla oblongata. Synonym(s): decussatio lemniscorum.

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